Medtronic has announced that on 22 February, 2017 it notified customers of a voluntary recall of all unused units of the StrataMR adjustable valves and shunts. These products are manufactured and marketed by Medtronic’s Neurosurgery business, which is part of the Brain Therapies division of the company’s Restorative Therapies Group. This recall only applies to StrataMR adjustable valves and shunts and does not apply to Strata II or Strata NSC products.

As of the initiation of this recall, 2,622 StrataMR valves and shunts potentially affected by this recall had been distributed worldwide. The affected StrataMR valves and shunts were manufactured from 27 October, 2015 to 11 November, 2016. Medtronic initiated the recall due to an increase in the product complaint rate. As of 1 April, 2017, the product complaint rate related to this issue was 2.75% of total units distributed.

Medtronic StrataMR adjustable valves and shunts are used in the management of hydrocephalus. They control the flow of cerebrospinal fluid being drained from the brain to relieve intracranial pressure. Medtronic is conducting this voluntary recall due to an issue that can occur post-implantation that can lead to the potential for under-drainage of cerebrospinal fluid.

Under-drainage of cerebrospinal fluid may result in the following adverse health consequences: headaches, nausea, vomiting and lethargy.

If any of the affected products have been implanted in patients, physicians should refer to the StrataMR customer recall letter sent February 22, 2017 as well as the valve adjustment instructions in the instructions for use (IFU) for continued patient care.

Patients and their caregivers should monitor the patient’s condition and if they find they are experiencing any of the above-mentioned symptoms, they should consult the physician who implanted the StrataMR valve.

If left untreated, under-drainage can potentially lead to coma and death. There has been one reported patient death, but the cause of death has not been confirmed to be related to this issue.

Medtronic initiated customer communication of the recall by letter and is requesting that customers cease use of all affected product that remain in inventory and return all unused units to Medtronic. The US Food and Drug Administration (FDA) and other regulatory bodies also have been notified.

Adverse reactions or quality problems experienced with the use of this product may be reported to the FDA’s MedWatch Adverse Event Reporting program online, by regular mail, or by fax.